@robertw @other Customers
Let's talk about common things shown in your mockups and called out in my OP list that I think all would agree with:

1) PANELS: You show at least two panels in each mockup. We have talk to Peter in the past about using them more. The already use them for example in the Mixer and Audio Edit views so the technically can do them easily. Panels are perfect to show related details/options for a main view. I think most would agree. (?)

2) TRANSPORT: Moving the Transport to the bottom giving more room for navigator view, more interactive transport buttons and other global things such as snap and loop states. I think most would agree. (?)

3)VIEWS: Core Views are called out in your vertical tool bar. Core views of the backbone to creating a consistent UI. (Chords, Tracks, Audio Edits, MIDI edits, Score Edits, Library) I think most would agree. (?)

4) TOOLBARS: You show very well toolbars being closer related to what they do or what they're about. We have suggested in the past and found in many music apps that allow you to layout toolbars that match your particular use. This both satisfies the simplification cry as well as making it more intuitive for somebody who uses the tool, for example, just to (generating backing tracks, practicing with backing tracks, creating songs for live playback) I think most would agree that simplified/customized toolbars is the right direction (?)

Studio One (latest version), Win 11 23H2 , i9 -10940X 3.3 GHz, 32GB Mem, a 4K 40" monitor, PreSonus Studio Live III Console as interface/controller. secondarily test on Reaper, Cakewalk, and S1 on Surface Pro 3 Win 10 (latest versions).